Emergency antenna



FIG. 1 is a side elevation of an emergency antenna in a furled condition, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is an end elevation thereof; and

FIG. 4 is a perspective view of the antenna in an alternate condition.

The broken lines representing the radio are shown for illustrative purposes only. 

The ornamental design for an emergency antenna, substantially as shown and described. 